Shock absorber



F ch, 6, 1923 2 SHEETS SHEET 1 G E CRAIG ET AL SHOCK ABSORBER.

FILED OCT. 24. 1921.

INVENTOR ATTORNEY v 1 WIITNESS:

- WITNESS:

G. E. CRAIG ET AL. SHOCK ABSORBER FILED OCT. 24, I921 2 SHEETS-SHEET 2 INVENIOR W V.

ATTORNEY Feb. (*5, i923.

nnir

GEORGE E. CRAIG AND JAMES IVloNABIiTAY, O1 IKUSKEGOI T, MICHIGAN, ASSIG-NOBS "31G PARAGON RECOIL SNUBBER COMPANY, OF lvEUSKEG-ON, MICHIGAIQ, A CORPORA TIGN DIE MICHIGAN.

SHOCK ABSCJBBER.

Application filedflctober 24, 1921.

T 0 aZZ whom it may concern Be it known that we, GEORGE E. CRAIG and JAMES W. MQNABNAY, citizens of the United States residing at Muskegon, in the county of Muskegon and State of Michigan, have invented new and useful Improvements in Shock Absorbers, of which the following is a specification.

The object of this invention is to provide means for checking the recoil of the vehicle springs while permitting free compression movement of the springs.

Another object of the invention is to provide means for adjusting the frictional engagement between the parts so as to make the device adaptable for different loads.

A further object of the invention is to eliminate springs in the device excepting a small spring which connects the ends of the split ring together.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

ln describing the invention in detail, ref erence will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure l is a. fragmentary view showing the invention in use on an automobile.

Figure 2 is an enlarged view of the device itself.

Figure 3 is a sectional view.

Figure l is a view of the bar l l.

Figure 5 is a view of the plate 6 which is provided with a key-hole shaped opening.

Figure 6 is a View of the split ring.

Figure 7 is a *iew of one of the discs 5.

Figure 8 is a view of the drum.

Figure 9 is a view of a key.

Figures 10 and 11 show modifications of the plate and belt respectively.

111 these views 1 indicates a bracket which is adapted to be bolted or otherwise secured to a part of the chassis frame 2 of a motor or other vehicle. A bolt 3 is connected with this bracket and this bolt rotatably supports the drum l which is provided with recessed ends for receiving the friction discs 5 and the plates 6. The discs 5 may be made Serial No. 509,910.

from any suitable material such as brake band lining. One of the plates 6 formed integral with the bracket or is suitably connected therewith so that it will not rotate and the other late is suitably provided with an opening which engages a key 3 on the bolt so that this plate will not rotate, but I prefer to provide a square part 3 on the bolt for engaging a square hole formed in the plate 6Q as shown in Figs. 10 and 11. A concave spring member 7 is placed on the bolt with its edges engaging the adjacent plate and this member is held on the bolt by the nut 8. By this means the frictional engagement of the plates with the discs can be adjusted. A split ring 9 surrounds the hub, the hub being preferably grooved to receive the ring and a lever 10 is pivoted to one end of the ring and a link 11 to the other end. The pivot pins 12 for said lever and link are perforated to receive the ends of a spring 18 which acts to hold the split ring in expanded position. The outer end of the link 11 is pivoted to the central portion of lever 10 and a bar 14 is pivotally connected with the outer end of the lever, the other end of the bar being connected to a part of the sp ing A of the vehicle.

It will thus be seen that upon the compression movement of the spring of the vehicle the split ring will simply revolve upon the drum but upon the recoil of the spring the split ring will be contracted due to the movement of the link and lever, so that the drum will be rotated and this movement of the drum will be resisted by the frictional engagement of the parts.

Our improved device can be used with each spring of a vehicle or with only the rear as will be understood. Our device will work equally as well on a car that is heavily loaded as it will on a. car wit-h a light load.

It is thought from the foregoing description that the advai tages and novel features of the invention will be readily apparent.

o desire it to be understood that we may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall withing the scope of the appended claims.

What we claim is:-

1. A shock obsorber of the class described comprising a drum, frictional means for engaging the drum, members pivoted to the ends ol the ring and with each other and means for connecting the members and drum with parts of a vehicle.

2. A shock absorber of the class described comprising a support adapted to be connected with a part of a vehicle, a drum rotatably mounted on said support, adjustable friction means for checking; the rotation of the drum, a split ring engaging the drum, members pivotally connected with the ends of the ring and with each other, means for connecting one member with a. part of the vehicle and spring means for normally l1olding the split ring in expanded position.

3. A shock absorber ot the class described cou'iprising a bracket adapted to be connected with a. part of a vehicle, a drumrota'tably supported on said bracket, friction means for checking the rotation of the drum, said means including frictional discs and non-rotatable plates engaging the same, a split ring on the drum, members pivota-lly connected with the ends of the ring and with each other and a bar connected with one member and adapted to be connected to a part of the vehicle.

l. A shock absorber of the class described comprising a bracket, a bolt carried therey, a drrun rotatably mounted on the bolt and having" recessed ends, discs of frictional material located in said recesses, stationary plates engaging said discs spring" means for pressing the parts together, a split ring engaging the drum, a link and lever, each having one end pivoted to the ring: and the link being pivotally connected with the center of the lever and a connecting bar pirotally connected with the free end of the lever and adapted to be connected with a part ot a car.

In testimony whereoi we atlix our signatures.

e'nonen CRAIG. JAMES w. Memnmr 

